I think you should re-align your TV.
The picture as it is (standard) is so heavily underscanned that any well-aligned TV should have a black border around it, and a TV that shows as much of the frame as possible will have a *BIG* black border.
In fact, on my FX 5200 with driver 4496 the overscan option does not work at all. I would like to make the picture larger but there is no reaction even when Overscan 1.0 is used.